Pulp-heating coil



7 H.W.LOWE

PULP HEATING COIL Filed March 26, 1919 *pulp.

Patented Apr; 12, 1927'.

TED T TA T E 'SA IID {HARRY "LOWE, *DEGEASED, -ASSIGNOR KERRY w. LOWE OF'INDIANAPOLIS,INDIANA; 1VIARK'W. LO E; mie-emanat s oi To mm ,P; nALfzEnL, or T MINNE- runr-niiarineicorn "Application filed March 26,1919. Serial N0. 2'8-5;142;

V Incooking tomato pulp in tomato-cannin'g' plants, by the use of steam-carrying coilsyitfis desirable that the coils be main- 4 'tained full of liv steam without backing u'p,'and that-"waterbe prevented from collect.

ing'in such-coils, es the collection of water not only lengthens teatime-required forthe eodking, but .L'a'lso fprodu'ces abui'ning or searching at a ices of solar "or the tomato I it'i's'itheobjectdf 'tny -presefit inveritionto jpr'dvide "a coil 'co'n"struction which prevents the "collection or water "therein, which allows the "steam to pas's throughthe r coil l wi'thotit any' backing up as an aeeeunt =01" I inequality in "cooling in "parallel connected 'pip'es extending through different parts of pulp be'iug cooked? By *doing' -this, I greatly reduce the time required for cock- 0 "in avoids'corclii andmaintain the natu- 7 ew I of the coils attheou'tlet.

' as an sectional view through segmen of "one 7 The'eoiliiiaycofisist ef apluralit'y of any number of superposed coil layers, three layers being shown in' Fig. '1 and two in Figs. "2""an*d 3. The "coil is mounted in a pulp-container 10, of any suitable type, conveniently provided with a discharge outlet 11 at the bottom for drawin oft the cooked pulp. Each layer of the coil consists of one or more circles of pipe, though it is not essential that they be circular in form, and as shown comprises an outer pipe circle 12 and an inner pipe circle 13. At its receiv ing point, the left in Figs. 2 and 3 and the rightin'Fig. 1, each pipe layer is connected to a steam supply pipe l l, which, in the arrangement'shown, leads by way of a fitting15 to both pipe circles 12 and 13 and to the two portions of each pipe circle branchfrom.

froinsuch litting so that withthe two 'fitting 15 into 'four' streams, as shown in Fig. 4. :At the discharge point, preferably opposite the receiving point, as shown; there isia fitting 16, which is di videdinto two circle layer shown the "steam "divides -at the parts centrak-web 175 "Into that part "of the fitting on each -'side of such "web one half turn of each pipe cir'c1e" discharges, as

ven't's the interconnection of "the discharge is c le'a'rjfroi'n Fig. 5. The web :17 thus the i of the pipes on "its'lop p'osite Isid'esfso that an the arrangement shown it preVent-s ga hacking up -'6f the st am an reithe'r hal f circle i casethere exists any di'iference "in pressure-at t'he"dfischarge ends oflsa'id two oolin gfia'ction ot'the portions ofthe pulp through which such half-circles pass; The

fhalf eir'clesasionaccount of differences in portion of thefitfifiElG on each side of the web 17 isc0nnectedfby a separate "L portion 18 to *a separate discharge pipe 19. "In the v arrangement shown, the two discharge oipipes I9 and the intake-pipe 14 of eachdayer pass through the 'wall of the container 10 at substantially e'ppesite points, "and "serve i as. sup-- ports for such layer. Outsideith'e container 1 0,"ea ch discharge pipe 1:9 {is connected to a separate downwardly (extending pipe" 20,

which efitend s downwarditoraeonsiderable distance and is then connected "through a check valve '21 to a 'h'eadejrQQ-Which is coinmon to all the pipes 20.;"Tlhe height of each pipe -20issulii'cie'nt so as to make :cer-' tain that the-head of waterwhich may colleettherein behind the "check valve .21 Ewill Pbe suifieientto 'operate such check valve before the water backs up' into the pipe 1-9, and the "coil connected thereto.

valves 21 also prevent water from] flowing backward through'thepipes 20 into any one This ensures keeping the coils clear" iefwater, zlheohec-k several pipes 19 20. From this tank% the collected water may be drawn at will, and, if desired, discharged by the steam pressure above it to any desired point, the dis-t;

charge of water from the tank 26 being con-- trolled in any suitablemanner, as by a suite.

' able valve 27. The tank 2.6 is provided with a water gage 28, connected to the tank at top and bottom,for indicating the water level therein, so that the operator may know the water level in the tank and may'make sure that the amount of water does not become sufficient to back up the water intothe coils. In order to guard against negligence on the part of the operator, Iprovide a float switch 29 operated by a float 30 responsive to the water level in the tank 26 for closing an alarm circuit, as of a bell 31 supplied from a battery 32, in case the water level in the tank 26 rises beyond a predetermined level.

The several coil layers are supplied with steam from a steam main 35, through a main valve 36 which controls the steam to all the 'COll layers. The steam for the lowermost coil layer passes direct from this valve 36 to the inlet'pipe 14 of such coil layer, but the steam for the higher coil layer or layers passes through another valve 37 connected to a T 38 in the connection between the valve 36 and the lowermost coil layer. This .is carried out for the succeeding coil. layers in the same way, so that eachcontrolling valve controls the supply of steam for its own coil layer and all the coil'layers above it, and is connected through a T such as the VT 38 to the supply pipe for thcnext lower coil layer between-that coil layer and its controlling valve. By this arrangement, any upperlayer or layers may be shut off by the operation of a single valve,leaving the coil layers below in operation, and the whole may be shut off by the operation of the main valve 36; but withal there are only as many controlling valves as there are coil layers. This arrangement is of considerable advantage, especially when but a small portion of pulp is being cooked, or when by the cooking the pulp has decreased in volume so as to uncover one or more coil layers.

I claim as my invention:

1. A pulp-cooking coil, comprising a plurality of pipesections, for immersion in the pulp, a plurality of separate discharge connections for such pipe sections, a separate dowinwardly extending pipe from each discharge connection, and a check valve connected to each downwardly extending pipe.

2. A pulp-cooking coil, comprising an intake fitting having a chamber, a plurality of pipe sections extending from such fitting and supplied from such chamber, a discharge fitting provided with a plurality of separated chambers and having such chambers connected to the discharge ends of difierent pipe sections, a separate downwardly extending discharge pipe from each chamber of said discharge fitting, and a check valve in each discharge pipe at a point suficiently belowthe level ofsaid pipe circles so thatthe head of water behind it will be sufilcient to operate it before the water rises to the level of said coil.

3. A pulp-heating coil, comprising one'or more pipe circles, an intake fitting connected to said pipe circles at one pointso asto divide each pipe circle into two branching portions and having a chamber which'supplies both portions of all such pipe circles in common, a discharge fitting connected to said pipe circles at another. point and provided with two separated chambers each of which is connected to receive'the discharge from one portion only of each pipe circle, a separate discharge pipe connected to each chamber of said discharge fitting, and a check valve in each discharge pipe at a point sufiiciently below, the level of said pipe circles so that thevhead of water behind it will be sufficient to operate it before the water rises to thelevel of said coil.

4. A pulp-cooking coil, comprising a series of pipe layers, a controlling valveconnected to each pipe layer to control the flow. therethrough, the valve for each higher pipe layer being connected on one sideto its associated pipe layer and on the other side to the connection between the next lower pipe layer and its controlling valve.

In witness whereof, I have hereunto set my hand at 59 N. Irvington Aver, Indian- HARRY w. Lows. 

